20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
-
-
-
-
-
-
-
-
+
-
-
-
-
|
#include "config.h"
#import "OFIRIHandler.h"
#import "OFDictionary.h"
#import "OFIRI.h"
#import "OFNumber.h"
#ifdef OF_HAVE_THREADS
# import "OFMutex.h"
#endif
#import "OFArchiveIRIHandler.h"
#import "OFEmbeddedIRIHandler.h"
#ifdef OF_HAVE_FILES
# import "OFFileIRIHandler.h"
#endif
#if defined(OF_HAVE_SOCKETS) && defined(OF_HAVE_THREADS)
# import "OFHTTPIRIHandler.h"
#endif
#import "OFUnsupportedProtocolException.h"
static OFMutableDictionary OF_GENERIC(OFString *, OFIRIHandler *) *handlers;
#ifdef OF_HAVE_THREADS
static OFMutex *mutex;
static void
releaseMutex(void)
{
[mutex release];
}
#endif
@implementation OFIRIHandler
@synthesize scheme = _scheme;
+ (void)initialize
{
if (self != [OFIRIHandler class])
return;
handlers = [[OFMutableDictionary alloc] init];
#ifdef OF_HAVE_THREADS
mutex = [[OFMutex alloc] init];
atexit(releaseMutex);
#endif
[self registerClass: [OFEmbeddedIRIHandler class]
forScheme: @"embedded"];
#ifdef OF_HAVE_FILES
[self registerClass: [OFFileIRIHandler class] forScheme: @"file"];
#endif
#if defined(OF_HAVE_SOCKETS) && defined(OF_HAVE_THREADS)
[self registerClass: [OFHTTPIRIHandler class] forScheme: @"http"];
[self registerClass: [OFHTTPIRIHandler class] forScheme: @"https"];
#endif
[self registerClass: [OFArchiveIRIHandler class] forScheme: @"gzip"];
[self registerClass: [OFArchiveIRIHandler class] forScheme: @"lha"];
[self registerClass: [OFArchiveIRIHandler class] forScheme: @"tar"];
[self registerClass: [OFArchiveIRIHandler class] forScheme: @"zip"];
[self registerClass: [OFArchiveIRIHandler class] forScheme: @"zoo"];
}
+ (bool)registerClass: (Class)class forScheme: (OFString *)scheme
{
#ifdef OF_HAVE_THREADS
[mutex lock];
@try {
#endif
@synchronized (handlers) {
OFIRIHandler *handler;
if ([handlers objectForKey: scheme] != nil)
return false;
handler = [[class alloc] initWithScheme: scheme];
@try {
[handlers setObject: handler forKey: scheme];
} @finally {
[handler release];
}
#ifdef OF_HAVE_THREADS
} @finally {
[mutex unlock];
}
#endif
return true;
}
+ (OFIRIHandler *)handlerForIRI: (OFIRI *)IRI
{
OF_KINDOF(OFIRIHandler *) handler;
#ifdef OF_HAVE_THREADS
[mutex lock];
@try {
#endif
@synchronized (handlers) {
handler = [handlers objectForKey: IRI.scheme];
#ifdef OF_HAVE_THREADS
} @finally {
[mutex unlock];
}
#endif
if (handler == nil)
@throw [OFUnsupportedProtocolException exceptionWithIRI: IRI];
return handler;
}
|